<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta  name = "viewport"  contrnt = "width = device-width,initial-scale=1">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
				padding: 0;
			}
			#box{
				width: 100%;
				border: 1px solid blue;
				height: 100vw;
				
				/* display: flex;
				justify-content: center;
				align-items: flex-end; */
				position: fixed;
				bottom: 0;
				left: 0;
			}
			#box div{
				height: 50px;
				border: 1px solid white;
				
				display: flex;
				justify-content: center;
				align-items: center;
			}
			#box div:nth-child(1){
				background-color: black;
				color: white;
				flex-grow: 2;
			}
			#box div:nth-child(2){
				background-color: springgreen;
				color: white;
				flex-grow: 1;
			}
		</style>
	</head>
	<body>
		<div id="box">
			<div>￥49</div>
			<div>去支付</div>
		</div>
	</body>
</html>
